Universal reset circuit for digital circuitry

Details Universal reset circuit for digital circuitry Universal reset circuit for digital circuitry

1981-08-24

1984-02-28

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307234, 307350, 307363, 307518, 307296R, H03K 524, H03K 5153

Patent

active

044344031

ABSTRACT:
The invention is a universal reset circuit for digital circuitry which monitors both clock pulses and DC voltage and provides a reset command when detecting a low DC voltage or missing clock pulse. The device uses two comparators and an RC circuit to form a pulse timing circuit which monitors clock pulses. Low DC voltage is monitored by a bridge circuit and a reference voltage. A third comparator receives signals from both the pulse timing circuit at the bridge circuit and produces a reset command. The reset command could re-initialize a microprocessor chip or the input controller of a main computer system.

REFERENCES:
patent: 4230958 (1980-10-01), Boll et al.
patent: 4266145 (1981-05-01), Amacher et al.
patent: 4367422 (1983-01-01), Leslie
patent: 4367423 (1983-01-01), Hornung

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